How to Manually Download an item for Offline Viewing (iOS)
Locate the item that you wish to download for offline viewing.
Press and hold your finger on the item. Select "Add to Downloader".
Note: If 'Delete from Downloader' is an option, then the item has already been downloaded and is currently available for offline viewing.
A progress bar will appear on the thumbnail. Once the download finishes, the item will be available to you regardless of your internet connection.
The 'check mark' icon above an item indicates it is already downloaded and available for viewing offline.